Of one-third to t



(No Model.)

G. W. MGLAUGHEN 8v W. L. GALLANT. BURGLAR ALARM.

Patented Apr. 17, 1894.

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UNTTnn STATES PATENT Ormea.

` GEORGE W. MOLAUGHEN AND WILLIAM L. GALLANT, OF GASTONIA, NORTH CAROLINA, ASSIGNORS OF ONE-THIRD TO T. C. PEGRAM, OF SAME PLACE.

BURG LAR-ALARM.

SPECIFICATION forming part of Letters Patent No. 518,532, dated April 17, 1894. Application filed November 8, 1893. Serial No. 490,379. (No model.)

To a/ZZ whom it may concern:

Be it known that we, GEORGE W. MCLAUGH- EN and WILLIAM L. GALLANT, citizens of the Unlted States, residing at Gastonia, in th'e county of Gaston and State of North Carolina, have invented a new and usefnl Burglar Alarm, of which the following is a specifica- This invention relates to burglar alarms; and it has for its object to provide a simple and efficient burglar alarm attachment which can be easily and readily attached to doors, windows, drawers, safes, and other similar obl]ects whereby the opening thereof by a burglar or unauthorized person will cause a cartr1dge or other explosive to explode, and notonly give a loud alarm, but also intimidate the burglar.

To this end the main and primary object of the present invention is to construct an alarm attachment of the character noted which shall dispense with bells and other similar devices aptto become easily disordered, while at the same time providing` an attachment which will not at all detract from the appearance of the object to which it is attached.`

With these and other objects in view, which will readily appear as the nature of the in- Vention is better understood, the same consists in the novel construction, combination, and arrangement of parts hereinafter more fully described, illustrated, and claimed.

In the drawings:-Figure l is vertical sectional view of a portion of a lower window the hinged or pivoted shell holder swung outsash showing theburglar alarm attached to the sash frame at one edge thereof. Fig. 2 is a detail elevation of a portion of a door and its frame or jamb showing the attachment used in connection therewith. Fig. 3 is a detail in perspective of the attachment showing wardfrom the attachment plate. Fig. 4 is a central vertical longitudinal sectional view of the construction shown in Fig. 3.

Referring to the accompanying drawin gsz- A represents an elongated attachment plato constructed of any suitable metal and shaped as may be desired according to the finish and appearance to be given to the completed attachment, and said attachment plate A, is

provided at its upper and lower ends with the screw openings a, adapted to receive suitable securing screws for fastening the alarm attachment to any desired object. As illustrated in Fig. l of the drawings, the attachment plate is shown as fastened atone side of a sash frame X, in close proximity to the moving lower sash so that means shall be provided for the sounding of an alarm when holder lugs when ej ecting a discharged shell y or loading the holder. The said pivoted or hinged shell holder D, is preferably of a rounded shape to register with the parallel lugs B, and thus give a finished appearance to the attachment, and the same isprovided with a central shell opening F, therein which is adapted to receive an ordinary powder-car-` tridge G, which is adapted to be exploded in the holder while the contents of the cartridge ejected by the explosion passes out through the opening C,`of the outerone of said holder lugs.

Beyond the inner one of the holder lugs B, are arranged the separated perforated. guide lugs H, which accommodate therein, for a reciprocating movement, the hammerrod I. The hammer-rod I, is adapted to be normally pressed toward the shell holder D, by means of the coil spring J, arranged thereon between the guide lugs and having one end thereof bearing against the pin j, or other suitable fastening for connecting the spring with the hammer-rod. The said hammer-rod, which is thus normally moved toward the cartridge or shell, is provided atits inner end with an exploding point K, which, under the tension of the spring J, is moved into the opening of the inner one of the lugs B, and against the cartridge or shell in` the holder i The outer end of the hammer rod I, is fury D, so as to explode the same, and the outer end of said hammer-rod is provided with a curved offstanding :linger grasp L, Which is grasped bythe finger so as to move the hammer-rod set for a sufficient play to explode the cartridge whenthesaid should er is thrown off of the guide lug by the raisingot the sash or opening of the door, drawer, or other obj ect in connection with which the alarm is used.

ther provided with an angularly disposed trip-arm N, having an outer beveled extremity fn, which is adapted to be engaged by the wedge or doubleV beveled strike lug O, projected from the strike plate P. The strike plate P, is suitably secured to one side of ythe sash x, so that when the sash is raised any material distance, which is of course predetermined when mounting the attachment, the said wedge lug or projection willbe moved against the trip-arm N, and thereby disengage the shoulder M, so that the hammer-rod will be forced against the cartridge to ex plode'the same.

It will of course be understood that the rela-k tive position of the strike plate and the alarmy attachment may be changed as may be re'-k quired, it being simply necessary to have one part fixed to a stationary object adjacent to the moving object to which the other part must be attached, and as illustrated in Fig. 2 of the drawings thealarm attachment may be secured to one edge of a door-frame or jamb Y, while to one edge of the moving door y, is attached a strike plate P. When the attachment is mounted as just described, the

,opening of the door will bring the strike platey P', against the trip arm and turn the hammer-rod sufficiently so that its catch shoulder will be disengaged and an alarm sounded.

The manner of attaching the alarm is accommodated to the object with which it is employed, and it will be further understood that changes in the form, proportion and the minor details of construction mayy be resorted to without departing from the principle or sacrificing any of the'advantages of this invention. t t

Having thus described the invention, what is claimed, and desired to be secured by Letters Patent, is

1. In a burglar alarm, the combination with a strike plate; of ank attachment plate .having separate i perforated holder j and, guide lugs,a shell holder pivoted or hinged to one of the holder lugs and adapted to be swung between and out of the same, said holder being adapted to lill the space between the holder lugs and having a central shell opening agreeingl withthe perforations in the lugs v ated hammer-rod mounted in said guide lugs andprovided with a catch shoulder adapted to engage one edge of the upper one of the .above and below vthe holder and a spring-actulugs, and an off-standing trip-arm at its outer end, substantially as set forth.

2. In a burglar alarm, the combination of a 'suitably arrangedattachment plate having lu`gsa` swinging perforated shell holder pivoted or hinged at one endto one of the holder'` Vlugs and adapted to register in the space the're-betweem'a reciprocating hammer rod mounted in the guide lug and provided at its inner end with a ring point, an intermediate catch shouldentadapted to engageon one of the guide lugs and at its outer endfwith a curved off-standing finger graspy and an opipositely extending angularly disposed trip arm having an outer beveled extremity, and

an actuating spring mounted on the hammen rod between the guide lugs, either said finger grasp or said trip arm being adapted to be engaged by a suitable trip, substantially as set forth.

In testimonythat we claim the foregoing as n our own We have heretoafxed our signatures in the presence of two witnesses.

GEORGE W. MCLAUGHEN. VILLIAM L. GALLANT.

Witnesses to the signature of Geo. W. Mc-

separate pairs of perforated holder and guide Y j 

